Your time and opportunities are not limitless and you should grab them when they are presented to you. Because of this, having a purpose and a fulfilling legacy should be looked at as two separate things.

Your purpose is part of your legacy, it can be central to the story, but is only a portion of it.

Your legacy is made up of the entire thread that binds it all together which is you, the qualities you live by and what you create and the fingerprint that you leave on the earth for those that come next.